Power outages in Williamson County, TN

We don't have a live outage feed for the utilities serving Williamson County yet. Nashville Electric Service, Middle Tennessee E M C and Duck River Elec Member Corp serve this county.

Right now

No live outage data for Williamson County yet.

Nashville Electric Serviceno live feed
iThis utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.
Serves this county, per federal utility records
iFrom EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.
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Middle Tennessee E M Cno live feed
iThis utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.
Serves this county, per federal utility records
iFrom EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.
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Duck River Elec Member Corpno live feed
iThis utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.
Serves this county, per federal utility records
iFrom EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.
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Columbia Power System - (TN)no live feed
iThis utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.
Serves this county, per federal utility records
iFrom EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.
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Outage map

No live outage feed here yet
County outline

Outage history in Williamson County

2014–2025 record

Williamson County averaged 24 significant outages a year in 2023–2025, about typical for Tennessee counties.

In the 12 months to December 2025, there were 26. Half were over within 15 minutes; the longest lasted 4.5 hours, starting January 22, 2025.

The largest on record began May 3, 2020, with 12,540 customers out at once.

24significant outages a year (2023–2025)
iAt least 1% of the area's customers, and at least 100, without power at the same time. Outages less than 6 hours apart count as one.
45 minutestypical (median) length
iHalf of significant outages here ended sooner than this, and half lasted longer.
1.9 dayslongest on record (May 2020)
12,540most customers out at once
Largest events (start)Peak outLasted
iHow long this area stayed at or above the significant-outage line, not how long any one home was without power.
Customer-hours
iCustomers out multiplied by hours out, added up over the event. 1,000 customers out for 3 hours is 3,000 customer-hours.
May 3, 202012,5401.9 days128,208
July 1, 202311,3405 hours39,057
September 6, 202510,7002.5 hours6,317
March 30, 202210,18945 minutes7,641
April 14, 202210,06211 hours34,755

Recorded outages from EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0).

iFrom EAGLE-I, Oak Ridge National Laboratory's record of utility outage data every 15 minutes since 2014 (CC BY 4.0). It covered about 9 in 10 U.S. customers.